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How do I check that multiple keys are in a dict in a single pass?
... +1, I like this better than Greg's answer because it's more concise AND faster (no building of irrelevant temporary list, AND full exploitation of short-circuiting).
– Alex Martelli
Aug 17 '09 at 2:34
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I need to get all the cookies from the browser
...visit=1225445171794
To simplify the access, you have to parse the string and unescape all entries:
var getCookies = function(){
var pairs = document.cookie.split(";");
var cookies = {};
for (var i=0; i<pairs.length; i++){
var pair = pairs[i].split("=");
cookies[(pair[0]+'').trim(...
Initializing a list to a known number of elements in Python [duplicate]
Right now I am using a list, and was expecting something like:
9 Answers
9
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Laravel Check If Related Model Exists
...$relation) is a general solution for all relations. It will work for Model and Collection, while Model has no ->count() method.
– Jarek Tkaczyk
Jul 29 '14 at 17:16
8
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Rails 4: List of available datatypes
...t, 2016-Sep-19:
There's a lot more postgres specific datatypes in Rails 4 and even more in Rails 5.
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R programming: How do I get Euler's number?
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The R expression
exp(1)
represents e, and
exp(2)
represents e^2.
This works because exp is the exponentiation function with base e.
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What does `kill -0 $pid` in a shell script do?
... 0 to a given PID just checks if any process with the given PID is running and you have the permission to send a signal to it.
For more information see the following manpages:
kill(1)
$ man 1 kill
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If sig is 0, then no signal is sent, but error checking is still performed.
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kill(2)
$ man...
Is a RelativeLayout more expensive than a LinearLayout?
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In a talk at Google I/O 2013 (Writing Custom Views for Android), Romain Guy clarified the misunderstanding that caused everyone to start using RelativeLayouts for everything. A RelativeLayout always has to do two measure passes. Overall it is negligible as long as your view hiera...
how to append a list object to another
in C++, I have two list<T> objects A and B and I want to add all the members of B to the end of A . I've searched a few different sources and haven't found a simple solution (e.i. A.append(B); ) and this surprises me a bit.
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Should I add .vcxproj.filter files to source control?
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Previous versions of Visual Studio (at least versions 6.0 and 2008) store that information in their own project file (.dsp and .vcproj files respectively), which of course is good to add to SCC.
I cannot think of any reason to not include this .filter files in SCC
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